Which number sentence is true? A. –39.6 ÷ 4.8 = 8.25 B. –39.6 ÷ (–4.8) = –8.25 C. 39.6 ÷ –4.8 = 8.25 D. –39.6 ÷ (–4.8) = 8.25

Arley is building a model of a city map. in one part of the city, three roads form a right triangle, which harley draws as triangle abc, with the following measures: m∠b=90° and m∠a=30°. in his scale model, the hypotenuse of triangle abc, ac¯¯¯¯¯¯¯¯, has a length of 817−−√ cm. what is the value of a (the length of bc¯¯¯¯¯¯¯¯)?

Ineed to know the answer to this algebra question.

The candy store is having a 30% off sale. emma is going to buy $7.50 worth of candy. how much will she pay after the discount